pratik pratik - 2 months ago 39
Javascript Question

HighCharts dual x-axis with percent and date

I have a requirement to display completion percentage on a bar chart with the start date for each of those project as line chart.




Now, for achieving this I have created a chart with dual y-axis.

1 - axis-1 shows progress with bar-chart. With max: 100 - avoid displaying values > 100.

2 - axis-2 shows start dates with a line chart




With this set up, I expect the bar to go all the way to the end when value is 100 and the secondary axis to adjust with in it. Instead the bar stops at about 3/4 of the way and line chart actually plots point beyond bar chart's 100%.


Following jsfiddle would display the prominently.




var completionChart = $('#Chart').highcharts({
title: {
text: 'Project QUAL Status - SD/uSD'
},
xAxis: {
categories: window.xCategories,
crosshair: true
},
yAxis: [{
title: {
text: '% Completion'
},
min: 0,
max: 100,
labels: {
enabled: false
},
gridLineWidth: 0
}, {
"title": {
"text": "Start Date"
},
type: 'datetime',
opposite: true
}],
tooltip: {
backgroundColor: 'rgba(255,255,255,1)',
borderRadius: 10,
borderWidth: 1,
borderColor: '#000000',
useHTML: true,
positioner: function () {
return { y: 317 };
},
shared: false,
style: {
padding: 5
}
},
plotOptions: {
bar: {
groupPadding: 0
},
series: {
dataLabels: {
enabled: true,
align: 'left',
overflow: 'none',
style: {
fontWeight: 'bold',
color: (Highcharts.theme && Highcharts.theme.textColor) || 'gray'
},
formatter: function () {
if (this.y <= 100)
return Math.round(this.y) + '%';
}
},
cursor: 'pointer'
}
},
credits: {
enabled: false
},
series: [{
index: 0,
name: 'Completion %',
data: completionpercent,
showInLegend: false,
type: 'bar'
}, {
data: startDate,
type: 'spline',
name: 'Start Date',
connectNulls: true,
color: '#2F4367',
lineWidth: 3,
yAxis: 1,
index: 1,
}]
});




The width of the chart is set and I can not change it without affecting the overall design of the application. Changing the width does help sometimes, but I want a solution that does not depend on the chart width to work.

Answer

You need to set the alignTicks property to false in order to achieve this.

Updated fiddle:

Reference:

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